The Health and Safety Executive are to join the emergency services in an investigation into the cause of the explosion at a wood flour mill in Bosley, Cheshire. The four-storey building was reduced to rubble on Friday, with fire and rescue services still working to secure the area and locate four missing persons who haven’t been seen since the Bosley mill collapsed.

Council enforcement officers were on site at the Bosley mill just two weeks ago due to complaints about saw dust. Leader of Cheshire East Council, Michael Jones, said: “We were on site two weeks ago clearing it up and they did well to clear it up. We will produce that evidence as and when necessary.

“The fact is this is the sort of industry that has a lot of problems tied to the dust and what happens around it.

“We shouldn’t assume anything. We mustn’t go down the trail of assuming anything.”

There had been fires at the complex in 2010 and 2012.

An investigation by the HSE is likely to take place once the area is safe and any missing persons have been found by the fire and rescue service. In conjunction with the police, the HSE will attempt to discover the cause of the explosion and identify what, if anything, could have been done to prevent the collapse.

Our thoughts are with all of those affected by the incident.